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EP1957200B1 - Élément de relevage composite d'un broyeur - Google Patents

Élément de relevage composite d'un broyeur Download PDF

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Publication number
EP1957200B1
EP1957200B1 EP06807995A EP06807995A EP1957200B1 EP 1957200 B1 EP1957200 B1 EP 1957200B1 EP 06807995 A EP06807995 A EP 06807995A EP 06807995 A EP06807995 A EP 06807995A EP 1957200 B1 EP1957200 B1 EP 1957200B1
Authority
EP
European Patent Office
Prior art keywords
lifting element
manufactured
wear protection
wear
drum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP06807995A
Other languages
German (de)
English (en)
Other versions
EP1957200A4 (fr
EP1957200A1 (fr
Inventor
Pekka Siitonen
Jari Liimatainen
Tage MÖLLER
Klas-Göran ERIKSSON
Sture Persson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metso Finland Oy
Original Assignee
Metso Minerals Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metso Minerals Oy filed Critical Metso Minerals Oy
Publication of EP1957200A1 publication Critical patent/EP1957200A1/fr
Publication of EP1957200A4 publication Critical patent/EP1957200A4/fr
Application granted granted Critical
Publication of EP1957200B1 publication Critical patent/EP1957200B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/1825—Lifting devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/22—Lining for containers
    • B02C17/225—Lining for containers using rubber or elastomeric material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2210/00—Codes relating to different types of disintegrating devices
    • B02C2210/02—Features for generally used wear parts on beaters, knives, rollers, anvils, linings and the like

Definitions

  • the present invention concerns a lilting element acting as a part of a lining made of a flexible polymeric material for a grinding mill used for grinding ores and minerals. More precisely, the invention concerns a lifting element of a grinding mill, where the mechanical properties and wear resistance of the wear protection change, when the profile of said lifting element changes due to wear, so that the service life of the wear protection increases.
  • the inner surface of the drum of grinding mills is plated with a wear resistant lining protecting the drum against wear caused by the grinding. Wear is caused by the ore and rock material and by the elements used for grinding like grinding balls, bars or cylinders. Materials used for wear lining include elastomeric material like rubber, composition metals like steel, or a combination thereof.
  • the wear lining comprises protective plates and lifting elements, said lifting elements being here later referred to as lifting bars. Lifting bars extend from one end of the drum to another, the bars being fastened to the frame of the drum and they mechanically lock the protective plates onto the surface of the drum. Lifting bars having the purpose to improve the rotation of the material to be ground and the grinding elements in the mill are located more projecting than the lining on the inner surface of the drum.
  • Elastomers used for linings of mills and lifting bars have low resistance to grinding abrasion, but high resistance to impact stresses.
  • Hard metallic linings like white cast iron have high resistance to abrasion but due to their low toughness, they can be used only in smaller mills, with less impact stresses. With worked or cast steel based materials the impact strength is higher but the wear resistance is lower than with the white cast irons.
  • a lifting bar having the best mechanical properties and wear resistance is provided by combining the elastomeric and metallic lining.
  • US Patent 5,431,351 discloses a lifting bar utilizing a metallic frame construction.
  • US Patent 4,848,681 discloses a lifting bar made of an elastomeric material having the leading edge reinforced with a metallic layer.
  • the lifting bar formed of polymer and metal is made of two or a plurality of metals, alloys or metallic and ceramic compounds connected to the polymeric frame so, that different portions of the lifting bar are made of material with optimal mechanical properties and wear resistance.
  • the lifting element according to the invention is characterized by what is stated in the characterizing part of Claim 1.
  • Figure 1 shows one lining bar 1 according to the invention as a partially cross-sectional view at the point where the fixing element 2 is located.
  • the lifting bar 1 is attached to the frame 3 of the grinding mill with a fixing element 2.
  • Pieces 4, 4' of polymeric material forming the wear lining are attached between the lifting bars, on the inner surface of the frame 3 of the mill.
  • the lifting bar 1 consists of a frame 5 of polymeric material and a metallic reinforcement 6 reinforcing the leading edge of the lifting bar, acting as wear protection of the lifting bar.
  • the metallic reinforcement 6 is comprised of two parts essentially on top of each other viewed from the base of the lifting bar, that is, of the upper part 7 made of material with lower hardness and higher toughness, and the lower part 8 made of material with higher hardness and lower toughness.
  • the metallic reinforcement 6 can be attached to the polymeric material body 5 for example with a mechanical joint or with an adhesive joint.
  • the upper part 7 and the lower part 8 of the metallic reinforcement 6 are attached to each other with a metallurgic bond between the materials or with an adhesive joint.
  • the upper part 7 of the metallic reinforcement 6 of the lifting bar 1 receives the impact stresses of the elements used for grinding, in other words, those of the grinding bars and balls, and the material to be ground in the grinding process.
  • the flexible polymeric material frame 5 of the lifting bar is of help.
  • the abrasive wear in other words, the grinding wear in the grinding process is mainly exerted to the base part of the lifting bar 1, at the area of the lower part 8 of the metallic reinforcement 6, which the hard material of the lower part 8 resists well.
  • the material of the upper part 7 of the metallic reinforcement 6 can be for example:
  • the material of the lower part 8 of the metallic reinforcement can be for example of:
  • FIG 2 shows one alternative embodiment of the lifting bar according to the present invention, having an attaching part 9 added to the metallic reinforcement 6 according to the Figure 1 .
  • the attaching part 9 is for ensuring the attachment of the metallic reinforcement 6 to the polymeric material body 5.
  • the attaching part 9 can be utilized when handling the metallic reinforcement 6 i.a. when mounting it in place in the mold in connection with the production of the lifting bar.
  • Figures from 3a to c show examples of the construction of the metallic reinforcement of the lifting bar according to the invention, as a cross-sectional view and as a front view.
  • the part 8 manufactured of wear resistant material is placed onto the lower part of the metallic reinforcement, the rest of the metallic reinforcement being the portion 7 made of tough material.
  • the portion of the piece 8 manufactured of wear resistant material in the cross-sectional area of the metallic reinforcement increases when moving from up downwards in the reinforcement.
  • the wear resistant material comes out along with the progressive wear.
  • Figure 3c shows an example, where the part 8 made of wear resistant material has been placed piece by piece in the metallic reinforcement, at desired distances in the longitudinal direction of the reinforcement.
  • Figures 4a-d show alternative cross-sectional profiles of the metallic reinforcement of a lifting bar according to the present invention. These cross-sectional profiles show, that in the solution according to the invention, the metallic reinforcement needs not to have a rectangular form, but it can also be implemented with different profile forms.
  • these figures show one embodiment according to the present invention, where the part 8 made of a wear resistant material is located inside the part 7 made of tough material, from where it comes out as a result of the wear of the metallic reinforcement, at the areas of the strongest wear. In this way a metallic reinforcement of a lifting bar can be provided, having properties changing and improving along with the progressing wear.
  • the materials of a wear protection of a lifting bar in accordance with the present invention can advantageously be manufactured with a powder metallurgical method, like for example by compacting the powder raw materials by means of hot isostatic pressing, whereby the powder(s) are compacted by means of temperature and pressure. If necessary, the material can be further processed for example by hot working or by forming.
  • a powder metallurgical method like for example by compacting the powder raw materials by means of hot isostatic pressing, whereby the powder(s) are compacted by means of temperature and pressure.
  • the material can be further processed for example by hot working or by forming.
  • Another suitable powder metallurgic method is the spray forming.
  • the methods described above can be combined, if necessary.
  • the material or materials of the wear protection of the lifting bar can also be manufactured by casting or by deposition welding. Suitable deposition welding methods are i.a. the PTA welding (Plasma Transferred Arc) and the submerged arch welding.
  • the materials of the wear protection of the lifting bar can also be joined by means of hot isostatic pressing or hot forging.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Shovels (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Earth Drilling (AREA)

Claims (12)

  1. Elément de relevage (1) pour un tambour d'un broyeur destiné à être utilisé afin d'assurer le broyage de minerais et minéraux, ledit élément de relevage étant fixé sur le châssis (3) du tambour et s'étendant dans la direction longitudinale du tambour, et ledit élément de relevage comprenant un corps flexible (5) réalisé en un matériau polymère et une protection d'usure (6) située sur le bord avant du corps par rapport au sens de rotation du tambour, caractérisé en ce que :
    la protection d'usure (6) consiste en au moins deux parties différentes (7, 8), lesdites parties étant fabriquées en différents matériaux présentant des résistance et dureté différentes l'un par rapport à l'autre,
    lorsqu'elle est vue depuis la base de l'élément de relevage :
    la protection d'usure (6) est divisée en une partie supérieure (7) et une partie inférieure (8), lesdites parties étant situées sensiblement l'une au-dessus de l'autre et la partie supérieure (7) de la protection d'usure (6) est fabriquée en un matériau présentant une résistance supérieure et une dureté inférieure à celles du matériau avec lequel la partie inférieure (8) de la protection d'usure (6) est fabriquée ou
    en ce que la partie (8) de la protection d'usure (6) fabriquée en le matériau plus dur est située au moins partiellement à l'intérieur de la partie (7) fabriquée en le matériau plus résistant.
  2. Elément de relevage (1) selon la revendication 1, caractérisé en ce que la partie (8) de la protection d'usure (6) fabriqué en le matériau plus dur est située sur la partie inférieure du bord avant de la partie (7) fabriquée en le matériau plus résistant.
  3. Elément de relevage (1) selon la revendication 1, caractérisé en ce que la partie (8) de la protection d'usure (6) fabriquée en le matériau plus dur est située au moins partiellement au-dessous de la partie (7) fabriquée en le matériau plus résistant.
  4. Elément de relevage (1) selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'au moins l'un des matériaux de la protection d'usure (6) est fabriqué à partir d'un matériau de base produit avec un procédé de la métallurgie des poudres.
  5. Elément de relevage (1) selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'au moins l'un des matériaux de la protection d'usure (6) est fabriqué par moulage.
  6. Elément de relevage (1) selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'au moins l'un des matériaux de la protection d'usure (6) est fabriqué par dépôt de soudure.
  7. Elément de relevage (1) selon l'une quelconque des revendications 4 à 6, caractérisé en ce que le matériau fabriqué avec un procédé de la métallurgie des poudres est un acier rapide ou un acier à outils par métallurgie des poudres.
  8. Elément de relevage (1) selon l'une quelconque des revendications 4 à 6, caractérisé en ce que le matériau fabriqué avec un procédé de la métallurgie des poudres est un matériau composite résistant à l'usure.
  9. Elément de relevage (1) selon l'une quelconque des revendications 1 à 8, caractérisé en ce que les matériaux de la protection d'usure (6) sont liés l'un à l'autre au moyen d'une augmentation de température et de pression.
  10. Elément de relevage (1) selon l'une quelconque des revendications 1 à 8, caractérisé en ce que les matériaux de la protection d'usure (6) sont liés l'un à l'autre au moyen d'un joint adhésif.
  11. Elément de relevage (1) selon l'une quelconque des revendications 1 à 10, caractérisé en ce que le formage par projection est utilisé pour la fabrication de la protection d'usure (6).
  12. Elément de relevage (1) selon l'une quelconque des revendications 1 à 1 l, caractérisé en ce qu'un procédé de moulage est utilisé afin d'assurer la fabrication de la protection d'usure (6).
EP06807995A 2005-10-24 2006-10-20 Élément de relevage composite d'un broyeur Not-in-force EP1957200B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20055569A FI20055569L (fi) 2005-10-24 2005-10-24 Jauhinmyllyn yhdistelmärakenteinen nostoelin
PCT/FI2006/050452 WO2007048874A1 (fr) 2005-10-24 2006-10-20 Élément de relevage composite d'un broyeur

Publications (3)

Publication Number Publication Date
EP1957200A1 EP1957200A1 (fr) 2008-08-20
EP1957200A4 EP1957200A4 (fr) 2010-07-07
EP1957200B1 true EP1957200B1 (fr) 2011-10-12

Family

ID=35185275

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06807995A Not-in-force EP1957200B1 (fr) 2005-10-24 2006-10-20 Élément de relevage composite d'un broyeur

Country Status (9)

Country Link
US (1) US7887000B2 (fr)
EP (1) EP1957200B1 (fr)
AT (1) ATE528076T1 (fr)
AU (1) AU2006307857B2 (fr)
CA (1) CA2626346A1 (fr)
FI (1) FI20055569L (fr)
RU (1) RU2413576C2 (fr)
WO (1) WO2007048874A1 (fr)
ZA (1) ZA200804382B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104056698A (zh) * 2014-06-27 2014-09-24 江西耐普矿机新材料股份有限公司 一种高耐磨的半自磨机复合衬板

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WO2009027187A1 (fr) * 2007-08-29 2009-03-05 Polysius Ag Broyeur tubulaire avec revêtement intérieure en matériau époxy
EA026603B1 (ru) 2008-04-01 2017-04-28 Уиэр Минералз Острейлиа Лтд. Лифтер в сборе для барабанной мельницы и способ его сборки
WO2010017589A1 (fr) * 2008-08-11 2010-02-18 Weir Minerals Australia Ltd Elément de revêtement pour broyeur et procédé de fabrication de l’élément
FI20095423A0 (fi) * 2009-04-17 2009-04-17 Metso Minerals Inc Menetelmä jauhinmyllyn vuorauselementin valmistamiseksi menetelmällä valmistetun vuorauselementin käyttö
US20130038003A1 (en) * 2010-01-19 2013-02-14 Tega Industries Limited Mixing drum for a blast furnace
EP3406342A1 (fr) * 2010-12-14 2018-11-28 Weir Minerals Australia Ltd Barre de levage avec point d'attache de levage
US8622330B2 (en) 2011-01-13 2014-01-07 Polycorp Ltd. Mill liner assembly
US9475057B2 (en) 2013-01-24 2016-10-25 Cabot Corporation Liner elements with improved wear-life for grinding operations
FI129240B (en) * 2013-04-15 2021-10-15 Outotec Oyj A method of making a lifter bar and a refurbished lifter bar
RU2546883C1 (ru) * 2013-12-02 2015-04-10 Закрытое акционерное общество "СОМЭКС" Комбинированная футеровка барабанных вращающихся мельниц
US10112200B2 (en) * 2015-04-29 2018-10-30 Spokane Industries Composite milling component
FI3156130T3 (fi) * 2015-10-16 2024-05-13 Metso Finland Oy Nostoseinäjärjestely ja nostoseinäjärjestelyn segmentti
US10456884B2 (en) 2016-05-19 2019-10-29 Polycorp Ltd. Liner system for a mill shell
CN107670779B (zh) * 2017-11-03 2019-07-09 盐城工学院 一种球磨机及物料粉碎系统
CN111889197B (zh) * 2020-08-28 2023-08-01 湖南国发控股有限公司 一种球磨机、半自磨机、自磨机的筒体复合衬板的结构
CN113073319B (zh) * 2021-04-07 2022-09-23 重庆科技学院 一种球磨罐内壁硬化方法及球磨罐

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104056698A (zh) * 2014-06-27 2014-09-24 江西耐普矿机新材料股份有限公司 一种高耐磨的半自磨机复合衬板

Also Published As

Publication number Publication date
ZA200804382B (en) 2009-08-26
CA2626346A1 (fr) 2007-05-03
RU2413576C2 (ru) 2011-03-10
EP1957200A4 (fr) 2010-07-07
FI20055569A0 (fi) 2005-10-24
US7887000B2 (en) 2011-02-15
EP1957200A1 (fr) 2008-08-20
WO2007048874A1 (fr) 2007-05-03
AU2006307857A1 (en) 2007-05-03
RU2008120653A (ru) 2009-12-10
US20090242675A1 (en) 2009-10-01
ATE528076T1 (de) 2011-10-15
FI20055569A7 (fi) 2007-04-25
AU2006307857B2 (en) 2011-03-31
FI20055569L (fi) 2007-04-25

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